2008/3/20 Loren Merritt <lorenm at u.washington.edu>:
> On Thu, 20 Mar 2008, Igor wrote:
>> >> they are using field-based interlacing (aka PAFF) , with 2 bframes.
> >> Their top field for b-slice uses temporal bdirect mode, whereas
> >> their bottom field in b-slice uses spatial prediction bdirect mode.
> >> Support for this prediction is incomplete in ffmpeg, hence the artifacts
> >> you're seing.
> >
> > is there any palns about implementation of full PAFF support in ffmpeg ? Does somebody work under this point ?
>> Bad question. I don't think anyone will ever write a decoder that
> suppports all the features of the standard. (No, the reference doesn't
> either). Nor all the features that can conceivably be in the same stream
> as PAFF.
> Now, you can ask about some specific feature, like field deblocking, or
> mixed direct mode.
Okay, here's a more direct question... Are there any plans on
implementing whatever is required to decode the following video?
http://people.csail.mit.edu/dalleyg/collaboration/avchd/hg10-pf24-clip2.mts
Currently some of the bottom fields decode improperly. Starting at
about frame 26, there's a chunk of frames that show difficulties. At
http://people.csail.mit.edu/dalleyg/collaboration/avchd/readme.html
search for "Frame Corruption" and you can see a figure illustrating the issue.
> --Loren Merritt
>>> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at mplayerhq.hu
>https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-devel>
--
--Gerald Dalley
dalleyg at mit.edu